Type-writing and computing machine.



H. HANSON.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR. I2, I9I2.

1,279,107. PatentedSept. 17,1918.

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TYPE WRITING AND COMPUTINQ MACHINE. APPLICATION FILED APR. 12. 1912.

1 ,279, 1 0'7. Patented Sept. 17,1918.

8 SHEETSSHEET 3- M149 s 464%054 50 MM H. HANSON.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR.12,I912. 1,27 9, 1 07. Patented Sept. 17,1918.

8 SHEETS-SHEET 4.

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H. HANSON.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR.12| I912.

Patented Sept. 17, 1918.

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H. HANSON.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR-2.1912- 1,279,107. Patented Sept. 17,1918.

8 SHEETS-SHEET 6.

m: -anms FnERS 5a.. mwmunm, wasumcmu. n. 1..

H. HANSON.

TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR. 12. 1912.

1,2?9, 107. Patented Sept. 17, 1918.

8 SHEETS-SHEET 7.

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H. HANSON.

TYPE WRIHNG AND COMPUTING MACHINE.

APPLICATION FILED APR. 12. 1912.

1,279, 107. Petented Sept. 17,1918.

8 SHEETS-SHEEI 8- W/Tfnesses. Y Mme/77hr C Q M %%m A/fomey UNITED STATES PATENT OFFICE.

HANS HANSON, OF HARTFORD,

CONNECTICUT, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y., A CORPORA- TION OF NEW YORK.

TYPE-WRITING AND COMPUTING MACHINE.

Application filed April 12, 1912.

To all whom it may concern:

Be it known that I, HANS HANSON, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Type-Writing and Computing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to combined typewriting and computing machines of the general character disclosed and claimed in my prior Patents 816,319 of date March 27th, 1906, 905,421 and 905,422, both of date December 1st, 1908, and also in the patent to Frederick A. Hart, No. 1,190,171, dated July 4, 1916, all entitled Combined typewriting and computin machines.

In my said prior Patents 816,319 and 905,421, the computer mechanism includes a set or row of computer keys that are distinct from and additional to the numeral keys of the typewriter. In my said prior Patent 905,422, a highly important feature of improvement was made by dispensing with the separate row of computer keys and employing the numeral keys of the typewriter to operate the computer. This improvement not only s mplified the mechanism but very greatly 1m proved the action of the machine, in many respects fully set forth in the said latter noted patent.

The Hart invention disclosed in his said patent above identified, was designed as an improvement on or refinement of the combined typewriter and computing machines of the type disclosed and broadly claimed in my prior U. S. Letters Patent 815,319, 905,421, and 905,422, above more fully identified. The machine of the said Hart patent also employs the numeral keys of the typewriter as the operating keys of the computer, in this respect, following my said prior Patent 905,422.

The said Hart patent is directed, among other things, to the improvement of the socalled decimal order selecting mechanism of my said prior machines and involves quite different construction thereof, resulting in material improvement thereon.

My present improved machine follows very closely and in many respects is identi- Specification of Letters Patent.

Patented Sept. 1'7, 1918.

Serial No. 690,281.

4 farthings 1 penny. 12 pence 1 shilling. 20 shillings 1 pound sterling.

In prior machines designed to add or compute in accordance with the English monetary system, at least two and usually three different keys have been required to register 1, 10 and 11: In my improved machine, I

use but a single key for the registration of 1, 10 and 11 pence, and in the preferred arrangement wherein the invention is incorporated in the combined typewriter and computing machine and the numeral keys of the typewriter key-board are employed as the operating keys of the computer, I have no extra key or keys, but use the typewriting numeral key marked 1 for making the different registrations above noted. Furthermore, this single key is used exactly in the manner it is used in writing the different amounts, and this, as is obvious, very greatly simplifies the keyboard action and avoids confusion.

' In carrying out this feature of my invention, I provide the pence wheel with three actuating members, all acting directly on saidwheel and all under the control of the 1 key.

Another feature of my invention relates to a modification of the carrying mechanism associated with the tens of shillings wheel, whereby, with slight changes in the construction, the usual form of zerosetting devices may be retained.

Another feature of my invention relates to the means for enabling fractions of pence,

or farthings, to be printed as common fracent instance, I place the fractions 1/4, 1/ and 3/4 on the numeral keys 1, 2 and 3, respectively, although, as will be seen, the particular keys used for this purpose are not material.

' Hereinafter, comparison will be made only between the present improved so called English Model machine-and the machine disclosed in the said prior Hart patent, and in the detailed description which will hereinafter follow, all of those parts which, in

.the present application and in the Hart patent, are identical, or substantially so, are designated by the same characters. Hence, if further description of one of the common elements or groups of elements herein briefly given is desired, it may be readily found by reference to the specification of said Hart patent.

It may be here further stated that the typewriter; the so-called decimal order selecting .mechanism; the latters connection to the typewriter, the unit pin-equipped register bars or preliminary representation devices; the unit bars for setting the unit pins; the latters connection to the numeral keys of the typewriter; and the operating carriage and associated parts including an operating crank, are identical, or substantially identical with corresponding parts of the machine of the said Hart patent. Various other devices such as error correcting devices, zero devices, unit pin restoring devices, punctuating space key locking mechanism, and certain safety devices, all clearly described in the said Hart patent, may be employed in the present machine, either in their identical form or in any desirably modified or improved form, not necessary for the purposes of this case to consider.

In many respects, the register, including the carrying mechanism employed in the present application, is very similar to that of the said Hart patent; but certain important modifications thereof, have been found necessary, all as will be hereinafter fully disclosed.

In my prior patents, and in the said Hart patent, theregisters therein disclosed comprise a group of decimal order digit-bearing wheels. For each register, there is a series of so-called register bars, to-wit, one for each register wheel, except the register wheel of the highest order. These register bars extend from front torear of the machine and each bar carries a series of vertically movable so-called unit pins. 7 I

The unit bars are, through suitable connections, depressed by the corresponding numeral keys of the typewriter. The rear ends of the register bars are raised in their properorder of succession by a decimal order selectingmechanism, and the latter is actuated by the typewriter carriage.

When the register bars stand in normal positions, their unit pins stand directly un der corresponding overlying unit bars, but

he far enough below the same so that the depression of said unit bars will not engage the respective unit pins, unless the rear portions of said register bars are raised by a so-called decimal order selecting member, in which case, however, the depression of any unit bar will force downward into a set position the corresponding unit pin of such raised bar.

In the Hart patent above referred to, the type for the numeral keys are arranged in lower case. l/Vhen the case is shifted to print upper-case characters, the decimal-order-selecting member is rendered ineffective, so that in such machine there can be no set-up on the unit pins by the numeral keys when printing in upper case. In the machine of my present invention, however, the type 1/4, 1/2 and 3/4 for printing fractions of pence are upper-case characters, and I provide for the setting of digit pins on the fractions of pence register bar, by these keys, notwithstanding the fact the decimal-order-selecting member is ineffective during the caseshifting operation. This I accomplish by latching the register bar associated with the fractions of pence order in its raised position, but further arrange. to trip said bar when the typewriter carriage is positioned in other denominational orders. Said register bar is also arranged to be tripped when correcting an error in the setting of the unit'pins, and also during the completion of the computation on the register wheels.

Register bars in which unit pins have been set are moved forward and rendered operative on the register wheels, by the movement of a so-called operating carriage or general operator, and the movements of the latter are controlled by a so-called oper ating crank, through suitable intermediate connectlons.

Other features and advantages will hereinafter appear. r

In the accompanying drawings which illustrate the present invention, like characters indicate like parts throughout the several views. Referring to the drawings,

Figure 1 is a view partly in diagrammatic side elevation and partly in vertical section showing the combined typewriting and computing machine embodying my inventlon, some parts being removed;

Fig. 2 is a plan view with some parts sectioned and with some parts broken away, showing the computing mechanism which is contained in the base section of the ma- Fig. 5 is a detail view in rear elevation showing the parts located in the vicinity of the line marked :0 m on Fig. 3;

Fig. 6 is a section taken approximately on the line w 00 on Fig. 2, some parts being removed and some parts being broken away;

Fig. 7 is a fragmentary view in rear elevation showing certain parts of the computing mechanism;

Fig. 7 is a fragmentary plan of certain of the numeral keys;

Figs. 8 and 9 are detail views in side elevation showing the two elements of the socalled pence register wheel;

Fig. 10 is a vertical section taken through the pence register wheel on the line 00 m on Figs. 8 and 9;

Fig. 11 is a fragmentary plan view of certain parts of the register shown in Fig. 1; and

Figs. 12 and 13 are views, respectively, in plan and elevation of one of the register carrying wheels.

Fig. 14: is a view showing the tens of shillings wheel with its associated carrying mechanism, the parts being shown in their normal positions.

Fi 15 is a View of the same parts, but in different relative positions, the tens of shillings wheel having been turned a dis tance suflicient to initially set its associated carrying pinion.

Fig. 16 is a view of the parts shown in Fig. 14:, after the carrying gears have moved the carrying pinion from the position shown in Fig. 15.

The typewriter illustrated is a No. 5 Underwood, the construction and operation of which is well known. Hence, for the purposes of this case, the parts ofthis typewriter will be identified only to an extent which will make clear the relation of the typewriting mechanism to the computing mechanism.

Directing attention particularly to Fig.

7 1, the numeral 1 represents the typewriter frame, the numeral 2 the typewriter carriage, the numeral 3 the type bars, the numeral 4; the character keys, the numeral 5 the numeral keys, the numeral 6 the shift keys, and the numeral 7 the spacing bar.

The typewriter carriage 2 has a vertically movable supplemental frame 2 that is held for parallel movements by arms 8 connected to a rock shaft 9 mounted in suitable bearings on said carriage. Said carriage has the customary wheel 10 that runs upon a guide rod 11 connected for parallel movements by a pair of spring-pressed bell crank levers 12 secured to a rock shaft 13, which, in turn, is journaled in suitable bearings on the sides of the typewriter frame 1. The platen or paper supporting roller 1 f iscarried in the usual Way by the supplemental frame 2 Upwardly extended rear portions 6 of the shift keys 6 engage-the backs of the bell cranks 12, so that when either one of the shift keys is depressed, the rod 11 will be raised, thereby lifting up the supplemental frame 2 with its roller 1st, so as to thereby present the printing surface of the paper on the roller, to the upper case letters of the type bars.

The numeral 26 indicates upwardly spring-pressed tabulating keys, (see Fig. 1) which operate in the usual way to release the typewriter carriage, for tabulating pur poses. The usual key-actuated in ercepting bars, not shown, eotiperate with the tabulat ing stops, not shown, to intercept more ments of the typewriter carriage in the tabulating action.

All parts of the typewriter so far described are found on the No. 5 Underwood typewriter equipped with tabulating mechanism, and for the further purpoes of this case, it is desirable to state that the depression of any tabulating key 26 will depress also one of the shift keys 6 (as shown, the right hand shift key), while the depression of the said shift key will not depress any of the tabulating keys. This is accomplished by means of a spring-pressed bail 2'7 pivotally connected to the typewriter frame-1 with its transverse free portion underlying all of said tabulating keys 26, and by a link 28 pivotally connected to an extension of the said right hand shift key 6, and having a slot that is engaged by the head of a stud 29 on one side of said bail 27. v

The mechanism for adding pounds sterling (53) may be and is assumed to be identical with or similar to that used for'ordinary numbers, which mechanism is disclosed in my said prior Patent 905. i21. and in the Hart patent, above noted.

The mechanism for registering shillings is different, however, and in order to make the proper registration thereof, 1 use two register wheels 5 and 8 respectively, for tens and units of shillings. The wheel .9 is similar to the wheels for registering pounds, but wheel 8 is different on its face, having the numeral 1 in five different places and having no other numerals or characters whatever, and having also five projecting lugs 1 or teeth for displacing the carrying wheel a whenever the amount on the said two wheels equals or exceeds the sum of twenty shillings, or one pound. so as to thereby transfer the twenty shillings to the unit member of wheels for pounds, when the register is actuated. The numeral nota tion 1 on the said wheel 8 and also the carrying lugs 1 are spaced equidistant circumferentially of said wheel. lVhile the construction of the said shillings wheels .9 and per se, is old and well known to those familiar with this art, a part of the carrywhich carries over from tens of shillings to units of pounds, are, in principle, the same asshown in Patent No. 816,319, or No. 905,421, but for purposes of manufacturing, the nine-toothed and six-toothed gears are made as one of suiiicient width, with nine teeth at first, and afterward, every third tooth is partially cut away laterally, Fig. 12, so that the portion nearest to the three-toothed wheel a has nine teeth, between which the carrying wheel retaining pawl finds lodginent and holds said wheel against accidental movements; the portion farthest away from the three-toothed wheel has only six teeth. This makes the wheels, in effect, and the functions thereof, the same as described in the above identified patents.

The construction and general mode of operation of the carrying mechanism associated with the tens of shillings wheel is illustrated in Figs. 14, 15 and 16. With the parts positioned as in Fig. 14, it will be clear that any carrying lug 1 will engage between a pair of teeth 02, w, on the carrying wheel a, and move the same to the position shown in Fig. 15, where the carrying lug. 1 is shown as having just passed the lower tooth w of the pair of teeth. The movement of all of the register wheels in the direction of the arrow takes place on the forward movement of the register bars 0.

During the return of the register bars, the carrying gears 03 are rotated, and if any carrying wheel a has been displaced to the position shown in Fig. 15, such carrying wheel is in position to be engaged by one of the carrying gearsa and to be turned by said carrying gears from the position shown in Fig. 15 to the position shown in Fig. 16. During such turning of the carrying wheel, one of the three teeth thereon engages a tooth of the pinion 8 associated with the wheel of next higher order. In Fig. 16 the pinion 8 shown behind the broken portion of the wheel 8 is associated with the units of pounds wheel, so that for each fifth of a rotation of the tens of shillings wheel, the units of pounds wheel is driven one unit of movement. In resetting the register wheels to zero, the shaft a is given a complete rotation. This may be done in the manner specifically set forth in my said Patent No. 905,421. The shaft carries spring-pressed balls g/ forming clutches which engage the register wheels, and, as the shaft rotates, the balls thereof will encounter all the several adding wheels and move them to positions such that the units order wheel stands at normal, while those of higher orders stand one step short 'of normal. The complete movement of the'higher order wheels is effected by the tens-carrying mechanism. It will be noted, however, that in the case of the tens of shillings wheel, if said wheel has been moved to such a position that more than one of its carrying lugs 1 would pass any given place during the rotation of the shaft a then, if there were no means to prevent it, the carrying wheel a would be turned more than the distance from the Fig. 14 position to the Fig. 15 position, and therefore the carrying mechanism, in completing the zero-setting operation, might, in some cases, fail to act on said carrying wheel associated with the tens of shillings order, and thus give a wrong indication at the reading line of the register.

The wheel for carrying over from the tens-wheel of shillings to the units'of pounds wheel, is therefore slightly different, due to the fact that the tens-wheel for shillings 8 as pointed out above has more than one carrying tooth, or lug, 1 on its face. When the register is cleared prior to starting new work, as above set forth said wheel 5 will be rotated a longer or shorter distance, depending on its position relatively to the means for setting the register wheels at zero, (0, or blank space) and for the purpose of preventing the wheel a being oper' ated on by more than one tooth 1 on wheel 8 no matter to what extent the latter is rotated, a notch, or slot, a is cut in every second of the six long teeth, through which teeth 1 on wheel 8 may pass. Normally, one of the long non-mutilated teeth, as for instance that tooth indicated at m, Fig. 14., is in such position that the tooth 1 on wheel 8 nearest to it will encounter and displace said long tooth, and bring the slotted tooth, :0 to occupy the position of the former, whenever wheel 8 is rotated, and if said wheel is rotated far enough to make more than one of its teeth 1 pass any given point, said teeth will pass through the slot a leaving the carrying wheel a" in proper position to be operated on by its co'ciperating segment a, to complete the carrying over process.

As there are twelve pence to a shilling, the wheel for adding pence is provided with twelve divisions, or units, from 0 to 11, on its periphery, or two more units than a wheel for adding pounds, and, provision is made'for making the pence wheel rotate as many spaces, from 1 to 11 inclusive, as are required, and with a single numeral key, operated in the ordinary manner of typewriting, said pence wheel will automatically register 1, 10 and 11, as the case may be, thereby relieving the operator from special operations when either 10 or 11 pence are to be added.

Farthings are treated as fractions of pence, thus 10 1/4: d., but a separate wheel is provided for same and will be more fully described hereinafter.

By reference to the machine of said Hart patent, and to the drawings of the present application, it will be seen that rods 7 are the connecting medium, or part of such medium, between the typewriter carriage and the preliminary representation devices of the adding mechanism. Describing or reviewing these connections more in detail, it will be noted that the so-called selector block f is carried by an extension on the typewriter carriage and supports a small dog f, designated as the selector. When the carriage moves from right toward the left, this selector f passes under the front ends of the selecting levers f forcing the rear ends thereof downward and pressing rods 7 downward, which, in turn,depress the rear ends of levers f forcing their forward ends upward against the cooperating so-called transposing bars f Extending upward from the said bars f are lugs 7 which are located directly under the rear ends ofthe corresponding register bars 0, for lifting up the latter in proper order of succession, when selector 7 passes under the levers f and thus presenting the said register bars 0, or rather the unit pins 0 thereof, to the overlying transversely extended unit bars 72 one after the other in an order of succession from left toward the right.

The register bar for operating the units wheel for shillings has nine longitudinally spaced pins 5.

One of the said lugs, to wit, the one marked 7 is of sutlicient width to lift two register bars marked 0 and 0 at the same time (see Fig. 7). The purpose of this will be fully set forth hereinafter.

The register bar 0, operating the tens wheel for shillings, has only one unit pin 1 which is located in line with the front transverse row of unit pins for adding pounds.

The improved mechanism for registering pence includes register wheels 8 and each having twelve divisions on its periphery. Hence, the gear wheels, hereinafter noted, which are mounted on the hubs of the said wheels 5 and s and mesh with the racks on the ends of cooperating register bars, are

larger in diameter than the gears on all of the other wheels of the register. This is done so that if the front row of unit pins be set in all of the register bars, the wheels adding pounds and shillings, when the operating carriage is moved forward and backward, will be given one-tenth of a rotation, but the pence wheel and farthings, or fractions of pence wheel, will be given only onetwelfth of a rotation. In other words, the difference in diameter of the gears on the pence wheels, and the number of teeth thereon is two-twelfths, or one-sixth more than in the gears on the other register wheels. By this improved arrangement, the register bars are all given equal movements when the corresponding pins are set, but with the re sulting variation in the rotation imparted to the wheels as and s on one hand and the decimal order register wheels which are assigned to pounds and shillings.

The register wheel .9 is preferably formed with a double rim or face and with the numerals 0 to 11, inclusive, thereon, and with one carrying tooth s projecting from the periphery of the left hand rim. Between the two rims is located a twelve-toothed ratchet wheel a rigid on the hub of the said rims. Also, on the hub of the said rims is a twelve-toothed wheel .9 which latter serves as a friction disk that is acted upon by a spring-pressed retaining pawl a The twelve-toothed wheel 8 also is operated on by that carrying wheel which co-acts with the farthings wheel The said parts s s 8 and s are all connected for uniform rotary movements and the common hub extends beyond the outer sides of both rims, so as to permit the mounting thereon of two gears s and 12 The gears s and 12 respectively, mesh with theteeth of the register bars 0 and 0. Attached to the gears s and 12 for uniform movements therewith, are two twelve-toothed ratchet wheels 8 and 8 respectively. The carrying tooth 8 above noted, has a flange or body portion 8 riveted to the web of the rims 8*, the said tooth projecting through a hole in said rim. The body 8 has a hole 8 in which is located a small pin 8, the upper end of which is reduced and is subject to a spring 8 that constantly forces the end of said pin against the ratchet wheel .9

When the register bar 0 is moved forward, the gear wheel 8 and ratchet wheel 8 are caused to move in the direction of the arrow marked on Fig. 4:, and when a tooth of the said ratchet wheel .9 comes against the pin 8 the wheel 8* and attached parts 3 and s are caused to move in the same direction. When. however, the said register bar moves backward, the pin .9 is cammed outward, by the ratchet tooth and slides over the teeth of the said ratchet wheel .9 permitti'ng the wheel 8" to remain stationary.

The right hand rim 8 is also provided with a carrying tooth body 8, pin 3 and spring 8 but the tooth s is omitted or cut off just under the rim 8". The ratchet wheel 5 is similar to the ratchet wheel s. The gear wheel 12 is in mesh with the rack on register bar 0 and operated thereby. The means for imparting motion to the other register wheels, by the respective regshown is identicel to that illustrated in sme t. s 'in the forward isi rs shin, wh s fit sliprs f s rtie Q r s shb s he p ess prl'ermetisml ifis said ti up d.- T t-s letstfis .l wes'i hs spri i may i n theutzretlfsi t f min ve stress-P srs sis ls s'f s the bet:

normally rests, and When'said bar 0 moves backward, the spring 8 causes lever s to move toward the register Wheel, and pawl s pushes the Wheel s one space, thereby causing a registration of 1 on said Wheel.

It may here be noted that the forward ends of the friction pawls a for Wheels 8 and s are 2L trifle longer than the other 'pmvlsg: due to the variation in spacing the teetlf'on their: friction disks s Ihe freetional pence Wheel 8 is similar in constructionto the Wheels for 4, with such niodifications as its funetions require. It has three cerrjin'g teeth three groups (iffigg'ures,='0, Zh/t;' -1%2,"and"3/4;'thereon, or twelvflivisi'ohs ihtill'; thesa'in e zis thepence wheehstfq It might lrave had only four or eight divisions; but; jfor" the s'ake at unirio its

column in the adding zone, to-wit, that for farthings, where fractions are required to be printed. The means employed for holding register bar 0, operating farthings' wheel 8 in the elevated position shown in dotted lines, in Fig. 1, presenting the units pins in said bar to the action of setting bars b while the platen is held in the upper case position, are as follows: On the rear end of the bottom frame of the adding machine are two L-shaped brackets 8 and s", supporting a rock shaft .9 on which is mounted a curved latch-arm s, the forward side of which rests against the rear end of register 0 when the latter is in its normal position, as shown in full lines in said Fig. 1. On top of said rock shaft 8 and attached thereto, is av flat rocking blade 8 extending for ward a little and then bent downward so that the lower edge is not far from the upper side of forward ends of levers f and as said levers do not have their upper sides in a horizontal line at the point where the lower edge of said blade crosses'them, the downward bent portion is a little wider at one end than the other in order that the distance between levers f and said rocking blade maybe as nearly equal as possible.

In said downward bent rocking-blade, near its left hand end, is a slot 8 which is directly above the path of that lever 7", which, when operated, causes register bar 0 to be elevated, p ermittingthat particular lever to be depressed by the selector f and connecting rod without coming in con tact with blades 5 but all of the other levers f when operated, strike against the lower edge of the blade and rock it. To the left hand end ofthe rocking blade 8 one end of a spring 8 Fig. 6, is attached and the other end is suitably attached to the bottom frame. This spring holds latch-arm 8 constantly against register bar 0 when in normal position, and when it is raised to the positionshown in dotted lines in Fig.1, latch arm a, under stress of spring 8 snaps in under the rear end of said bare? and holds it in that position. I

The type-block connected to, and operated by the numeral keys representing 1, 2 and 3, are provided with the upper case characters 1/4, 1/2 and 3/4, respectively, and the finger pieces of said keys are. properly marked, indicating their respective lower and upper characters, as shown in Fig. 7 and as there is no connection between the nee-shift keys 6 and latch arm a, it'is eii dent that the register bar 0 will remain in its elevated position when the case shift key is depressed, so that an upper case character l/ l, l/@ or 3/4 may be printed by the operation of the proper key, and at the same time, the Jin, in said register bar, represent.- i'ng the fraction printed, will be set bythe setting bar 6 connected to the key operated.

Any lever it, except the one working in slot 8 will strike against the edge of rocking-blade 8 rocking the shaft 8 thereby forcing backward the upper end of latcharm a, letting register bar 0 fall down to normal position. Thus, it will be seen that the rocking-blade 8 is a safety device for preventing bar c from being in a raised position atthe same time that any other register bar is in position to have a units pin set therein. To the left of lever f cooperating. with bar 0, is one more lever, s ,'c0n'nected by a rod 7 to a lever 7, the same as lever f, the forward end of which is shorter than the others and not connected with any of the transposing bars 7' and the function of which is to strike against the rocking-blade 8 and thereby automatically release latch-arm '8 from register bar 0 when the typewriter carriage escapes one step after printing a fractional number in the farthings column.

As it is not always necessary to print anything in the farthings column, and as register bar 0 is lifted up immediately after the imprint in the pence units column, it is necessary to release said bar a from its raised position by other means than lever 8 For instance, the operator may want to correct an error at the moment bar a is in its raised position, but unless said bar is lowered the error key 17 cannot be depressed because the shoulder a of the raised register bar is in such position that the'transverse bar 25 cannot pass overit. All the other register bars will fall down when the carriage is in such position that selector f is not in contact with levers 7, but bar 0 may be held in its raised position by latcharm no matter in what position the typewriter carriage may be. The means for releasing said bar a from latch-arm s by depressing the error key, are best shown in Fig. 6, inwhich the rear end of said, bar is shown in its raised position and resting in the upper notched end of latch-arm s.

The lower end of error key 7;, when depressed, comes in contact with a lever 25 rigidly attached to a rock-shaft t j t" is another lever also fast on rock-shaft On lever t is a shoulder headed pin to receive the forward end of a link 25 the rear end of which rests in a hole in the forward portion of the rearbottom frame. Near the rear end, said link has a curved portion forming a hook '15 adjacent to a pin 25 at the lower end of a lever t, attached to the shaft In the upper end of lever 25 is fastened the, transverse bar t the other end of which rests in a similar support on the opposite end of shaft Z Lever Z is held in the position, shown by the spring 25 which forces pin against hook i on link 15 until itrests against the bottom frame.

A little to the rear of shaft i is another shaft 25 on which is located an am the freeend of which is cam-shaped. On rockshaft 8 located on the right of and close to latch-arm s is another curved arm which has a headed pin 8 on its right hand side, embraced by the forked end of a link 8 the other end of which is suitably attached to the upper end of an Lshaped bracket 8 attached to the top of the transverse bar When error key 2 is depressed, link t is drawn forward, the upperend of lever Z is thrown rearward and through link 5 arm 8 is also forced backward, rocking the shaft s and latch-arm 8 so that its free end is disengaged from rear end of bar 0 which immediately falls down permitting transverse bar 25 to move backward over the shoulder a of said bar a. Said transverse bar t serves to hold all the register bars down firmly while the pin restoring platform, underlying all the units pins, is forcing set units pins back to their normal positions, under the action of the error key, or when the handle of the adding machine is operated, and the operating carriage is moved. 7 V

The arm 25 on shaft also operates on arm 8 to rock latch-arm s so as to release registed bar 0 whenever the last item printed happens to be in the pence units column and the handle of the adding machine is operated to transferthe amount printed to the register. As this arm 15 has other functions to perform, fully disclosed in the Hart patent above identified, I do not consider it necessary to further describe its operating connections. v r Theme-ans for causing. the pence wheel 8 to register the various amounts of 1, 10 and ll by the operation of one single key, (the numeral key 5 bearing the numeral 1) have been partially described, but there are a few parts not'yet mentioned.

In Figs; 1, 2 and 3, the setting frame 6 with its units pin setting mechanism is shown. When the numeral key 5 bearing the numeral 1 is depressed, its downwardly depending link 6, strikes its connecting arm 7 b rocking the shaft 6 and thereby forcing off down the units setting bar 6 connected to rock shaft 6 setting the most forward units pin, representing 1, in any register bar that may be in a raised position. At therear end Qifafiitltl; shaft 72 is an arm s rigidly attachedygt said shaft, and the free end of whiehj forked,and embraces a pin 8 in one end; ofa leverggtf, fulcrumed at s on a studpin in; the rear-,vvall, o f,the setting frame Z2 .15l he @thetend .013: s id. leve Works i a su deibl ck a ttaQhe-d ethe. a W of the se ing-i m -a -Th f e en f said le s v a e t.atafise t ame waders-th e raWa 1,.o s tt ng t i e which has a Slot itaee sileuee a erness-ti s. h eat-emer e 6 94. 9. up alat ers ea its? fr end of said lever 8 lies directly above units pin 0 in register bar 0 so that when said register bar is in a raised position and the numeral key representing 1 is depressed, the lever 3 will set said pin a. As there is no other pin in said bar the setting bar N, which is operated by the said key, performs no function with regard to this bar 0 This register bar 0" coiiperates with pence wheel 8 and the pin 0 represents tens of pence, consequently, when 1 is printed on the paper, with the bar 0 in raised position, said 1 appears in the tens column for pence, and the pin 0 being located one space in the rear of the units pins, representing 9, in the other register bars, it is easily under stood that the bar 0 when moved forward by the connections with the operating handle, will rotate pence'wheel s. ten spaces,

registering 10 on its face. After operating key 1, if 10 is the amount desired to be printed, the zero (0) key is depressed to print the naught, and as said key has no connection with the adding or registering devices, its action has no effect on the latter, but the amount is printed in the proper place on the paper.

Under the heading operation I will explain how. the registrations of 1 and 11 are efiected.

Operation.

5s. 6s. 11s.

Total 1. 2

or 1.8 2 shillings.

Assuming that all register wheels are at zero at the sight opening, we will now add 5. The typewriter carriage is positioned so that selector f is under that selector leyer 7 which represents units of shillings, therear end of lever f depresses its corresponding rod f and lower lever f the ,,la tter causing the rear end of the register gbar actuating the units shillings wheel 8%, tolb e raised up. The numeral key representing 5 is now depressed, printing 5 onthefpaper, and setting the units pin representing 5 in the raised register bar. T he T p'erating handle is now oscillatedand ,thefnumeral 5 appears on the saidwheel mu the other wheels still showing Q 'orablank space. We will now add 6 more, llheftypewriter carriage must be positioned before, as to column, but the printingpoint, of course, must be below that of,,the,previous imprint, when the numeral key j representing 6 is struck, printing 6 lead r h nd ett ng the units pi r presenting ,6 in the same register bar as before. The handle is again oscillated and 6 is trans.' ferred to register wheel 8 which will rotate the wheel one space beyond theO, so that 1 will appear on saidwheel at the sight opening. As the said wheel passes from 9 to 0 at the. sight opening,-the carrying tooth displaces its co-acting carrying wheel and on the backward movement of. the handle, said ca *rying wheelrotates the tenswheel 8 one space, whereby the numeral 1 appears on said wheel at the sight opening. We now have the numeral 1 appearing on both the shillings wheels, which, together 1 read 11, which is the total of 5 and 6 added together. So far, the. action is similar to that of adding or dollars. We will now add 11 more This time the typewriter carriage is positioned one stepto the right of its pre vious positions, in order that the figures may be printed in their respective columns. The numeral key representing 1 is now depressed twice in succession, setting the 1 pins in the two register bars actuating wheels .9 and The handle is again oscillated, transferring 1 to each of said wheels, each of which already displays the numeral 1. When the handle has completed its movement and is back to normal position, the numeral 2 will appear on wheel 8 and a blank space will appear on wheel 8 lVhile the latter rotates one space, from. 1 to blank, one of its live carrying teeth operates its co-acting carrying wheel and when the handle moves backward, said carrying wheel transfers 1 to the next higher decimal order, which is the units of $3, and on the units wheelof which now appears the numeral 1, so that when the total is read it appears as M or 1 25.

It is'here noted that the register barfor wheel .9 has only oneunits pin, representing 1; as there are '20s. to one no higher amount than 1 can ever be properly printed in the tens column of shillings, because any higher amount in that column represents 1 or more, and by having only one pin in that bar, the machine can never add more than 1 at a time in that column (ten shillings) by the action of the numeral keys. If the operator makes a mistake and prints a 3 in the tens columns, it has no efiect on the adding mechanism and he can correct the error on the paper. and proceed with the work.

We will try one more example. Assuming that 19 appears on the two shillings wheels and 19 more is to be added thereto, which is the highest amount of shillings that can ever be properly added, 9 will be transferred to wheel 8 making 8 appear thereon, and 1 to wheel '8 so that thelatter wheel would show blank at the sight opening on the completion of the forward movement of thehaudle. The carrying wheelsfor both wheel 8 and wheel were, however, displaced duringthis movement, and on the backward movement of the handle, said wheel a andthe units wheel for :53 will each be rotated one step, and one (1) will again appear on wheel 8 and 1 on .theunits wheel for the total now readinglz 18s., I believe this action is now. fully understood and we will proceed to the pence wheel.

After the numeral representing the units of shillings has been printed,.selector f will be under a selecting lever g (Harts ease) cooperating with the punctuation space key locking devices, and before a numeral key can be depressed, a punctuation mark must be printed, or the space bar ofthe typewriter operated once, to cause the typewriter earriage to move one step to the left, when selector ,1" will be under lever f cooperating with register bar 0 having only one units p n 0.

lVe will now add and Total 1. 83/1 lVhen the selector f is in the position it occupies immediately after the punctuation mark between shillings and pence has been printed, the numeral key bearing the nu meral 1 is struck, thereby oscillating its connecting rock-shaft 6", and through thearm s communicates motion to lever 8 setting pin 0 representing 10 in bar 0 As there is no other pin in said bar 8 the action of the setting bar 6 connected with the rock-shaft I), has no efiect this time, the typewriter carriage escapes one step, causing register bars 0 and c to be simultaneously raised by the wide lug 7' (on one of the transposing bars 7') underlying said register bars. Bar 0 has only one units pin, representing 1, and bar 0 has eight pins, representing 2 to 9 inclusive. The numeral key representing 1 is'again depressed, which sets the units pin in bar 0 by the regular setting bar 7f, and as there is not any 1 pin in bar 0 no pin is set in that bar. The operation of the numeral key bearing numeral 1 twice causes 11 to be printed on the paper. The operating handle is now oscillated and bar 0 causes pence wheel 8* to rotate 10 spaces on the forward movement ofthe handle, and as the handle is nearing the end of its forward movement, the other bar 0 is picked up and moved a short distance forward, during which movement, it pushes against arm .9 of lever a, until the free end of pawl s falls in behind the tooth on ratchet wheel a on which the pawl normally rests. hen the handle is moved backward, the spring a, which was compressed during the forward movement, exerts sufiicient pressure against arm s?, of lever s", to cause pawl 8 to rotate ratchet wheel 8 one space, and as said ratchet wheel is rigidly attached to. the double rimmed wheel 8*, the latter also moves one space, so that the number 11 is registered thereon. It is here noted that the rotation of one space of wheel 8 on the initial backward movement of the handle, takes place before the segments a on shaft a, commence to operate on their corresponding carriage wheels a". It will thus be seen that the setting of pin c in bar 0 causes a registration of 10, and the setting of the pin in bar c, causes a registration of 1 and when both pins are set, as above described, they cause a registration of 11, both registrations controlled by the numeral key 1. We will now add 9 3/4 to the 11, already appearing on the paper and the pence wheel. The typewriter carriage is positioned so that the 9 will be printed in the units pence column, when selector f again causes register bars 0 and 0 to be raised up as before; the key representing 9 is struck, setting therear pin in bar 0 by the regular setting bar 6 connected with the 9 key, and as there is only one pin representing 1, in the other bar 0 only one pin is set in the two bars. After striking the 9 key, the typewriter carriage escapes one step, lifting up the last register bar 0, in which there are only three pins, representing the fractions 1/4, 1/2 and 3 /4, and the numeral key representing 3/4 and also3, is struck, setting the rearmost pin, representing 3/4 but as there are two types on the type bar operated by said key, viz., 3 and 3 /4, it is necessary to depress the caseshift key 6 and holding it depressed in the usual manner for printing upper case characters, while the key is being struck, in order that the upper case character 3/4 may be printed on the paper. The depression of shift key 6, however, removes selector f from its connecting lever 7, to a position shown by dotted lines in Fig. 1, so that the register bar a would fall down and remove the units pins in said bar from the position in which they can be reached by their respective setting bars. To hold said bar 0 in its upper position, while theshift key is depressed, the latch arm 8 on rock-shaft 8 is provided as'already described. When the typewriter carriage escapes from the pence units column to the fractional column, the selector f raises bar 0 to the position shown by dotted lines in Fig. 1, and latch arm a, under stress of spring is, snaps in under the rear end of bar 07 and holds the selector 7 comes in contact with the last -8* and 3/4 to the farthings wheel 8 selecting-lever f to the left, depressing its connecting rod 7 which, operates lower lever the forward end of which operates on the lower edge'of rocking blade 's lifting it up and turning rock-shaft '8 in a direction contrary *to its movementunder the action of its spring 5-, thereby causing the cause 1 to appear on the units shillings wheel which is equal to 12 pence, leaving 8 on the .pencewheel s and wheel 8 shows 3/4 at the sight opening, so that the total reads as follows: 1s. 8 3/4 d.

When 3 /4 appears on the farthings wheel and more is added thereto, the carrying mechanism will transfer 1 to the pence wheel in a manner generally well understood by those'familiar with this art. 7

Contingencies may arise, especially when errors need to be corrected, which might leave bar 0 in its upper position at a time when thehandle is oscillated, and if it had one of its pins set the driving bar of the adding machine carriage, would not catch any such set pin, and the registration on farthings wheel .9 would not be correct. To prevent any such thing happening the cam arm s, amok-shaft s is provided. Said cam arm 8 is in the same plane as the arm 25 on rock-shaft the latter always being rocked when thehandle is operated, through means described in said Hart patent, causing the free end of arm 25 to move downward and against the cam arm s ,pushing the latter rearward far enough to re lease latch arm 8 from bar 0, letting the latter fall downin time for its set pin to be caught by the operating carriage driving bar. The question may arise as to why I have two b'ars'virtually acting as one, when one bar with nine pins might apparently do the same thing. The reason is this: With an ordinary bar with nine pins, I would be unable to register 11 because when the handle was nearing the end of its forward movement, it would cause the two bars to act simultaneously on one wheel and only the act-ion of the bar 0" would afiect the rotation of the wheel, hence, it was necessary that the rotation of one space should be made on the return of the handle, but as bar Wis adapted to rotate the wheel, only one 7 space at a time, it was necessary to put in a third bar, 0 to rotate the wheel so as to register units from 2 to 9, inclusive.

Summed up briefly, the pence wheel has three register bars connected to it. Bar

0 when pin 0 is set, will always cause a registration 01": 10; bar 0 can only cause a registration of l, but when both bars are used together,-they will cause a registration of 11; and bar 0 will cause a variable registration corresponding to the value of the pin that may be set.

The following is a specimen of work done onthis machine:

From thestatements above, it will clearly appear that some of the register keys, such as the pounds, units of shillings, and pence wheels, are under control of all of the keys, because any amounts from 1 to 9 can be properly registered thereon; but that the things wheel.

Variations may be: resorted to within the scopeof theinvention, and portions of the improvements may-be used without others.

IVhat I claim is 1. In a computing machine, the combination with computingwheels, of a plurality of actuators for one of said wheels, means for controlling the movement of one of said actuators to give said wheel ten steps of movement, and-means tor-controlling the other of said actuators to give said wheel diiferential movements lessthan ten steps.

2. In a machine-forcomputing English currency,'the combination with :a register including a pence wheel, of a plurality of actuators forsaid wheel, one of said actuators moving said wheel-tensteps, another of said actuators moving said wheel different amounts less than ten steps, a single key for controlling said firstmentioned actuator, and a plurality of keys for controlling said second-mentioned actuator.

3. In a machine for computing English currency, the combination with a register including a pence wheel-,of two "pinions constituting part of said wheel,'and means for engaging each of said pinions to drive said pence wheel different amounts at diiferent times.

4. In a machine for computing English currency, the combination with a register including a pence wheel, of a pinion forming a part of said wheel, a ratchet also forming a part thereof, means cooperating with said pinion to drive said pence wheel different amounts, and means cooperating with said ratchet to drive said pence'wheel a single step of movement.

5. In a machine for computing English currency, the combination with a register including a pence wheel and carrying mechanism therefor, of a ratchet wheel forming a part of said wheel, a pawl cooperating with said ratchet wheel to drive said pence wheel a single-step of movement, and a key to determine when said pawl shall be efiective.

6. Ina machine for computing English currency, the combination with a register including a pence wheel, of duplex actuating means for said pence wheel, a motor for one of said actuating means, a general operator, and means controlled thereby for moving one of said actuating means to drive said pencewheel on the forward stroke of said general operator, and supplying power to said motor, said general operator also enabling said motor to drive said pence wheel on the return stroke of said general operator.

7. In a machine for computing English currency, the combination with a register including a pence wheel, said wheel having two pinions and a ratchet formed thereon, of means cooperating with one pinion for advancing said pence 'wheel'ten steps, means cooperating with the other pinion for difi'erentially advancing said pence wheel less than ten steps, and means cooperating with said ratchet'for advancing said pence wheel solely one step.

8. In a machine for computing English currency, the combination with a register including a pence wheel, of duplex actuating means for said wheel, a motor for one of said actuating means, means for concomitantly driving said pence wheel ten steps and supplying power to said motor, and means for subsequently permitting said 1110- tor to act to drive said pence wheel an extra step.

9. In a computing machine, the combination with a register having a plurality of register wheels, one of which is marked to register more than nine units, of a series of actuators for engaging said wheel, one ofv said actuators arranged to move said wheel one unit,another ten units, and another clifferent distances less than ten units, and keys for controlling said actuators.

10; In a computing machine, the combination with a register having a plurality of register Wheels, one of which is marked to register more than nine units, of an actuator for causing the registration of tens on said wheel, a plurality of actuator'sxfor causing registration of units on said Wheel, keys for controlling all of said actuators, and means for shifting theaction of said keys from the tens actuator to the units actuators. I

11. In a computing machine, the combination'with aregister comprising groups of wheels representing different denominations, both decimal and non-deciinal, one of said wheels marked to register more than nine units ofa certain denomination, of a series ofactuator's for said wheel, one of said actuators moving said Wheel ten steps, another actuator moving said Wheel from, two to nine steps, and another actuator moving saidwheel one step, a series of numeral keys corresponding to the digits 1 to 9, inclusive, means whereby said keys from 2 to 9 may control said wheel to register corresponding 0 amounts thereon, and means whereby the numeral key denoting one unit may'control the operation of one or a plurality of=said actuators to register on said Wheel one, ten oreleven units at will. a

12. In-a computing machine, the combination with a register, of a step-by-step 'moving carriage, numeral keys controlling said carriage, register bars for actuating said register, said register bars being normallyi out ofthe range of action of said numeral keys, transposition bars for moving said register ibars one after another to position to be acted on by said keys as said carriage moves step by step, and means on one of said transposition bars for acting on two of said register bars simultaneously. i Y

13. In a computing machine, the combination with a register, of a step-by-step moving carriage, numeral keys controlling said carriage, register bars for actuating said register, said register bars being normally out of the range of action of said numeral'keys, transposition bars, lugs on some of' said transposition bars for engaging and moving said register bars one after another to position to be acted on by saidkeys as said carriage moves step by step, and a broad lug on one of said'transposition bars forengaging two of said register bars simultaneously.

14:. The combination with a typewriter having a case-shift key, of a denominational order selector under control of said shift key, aseries of numeral keys, register bars, means connecting said register bars and denominational order selector for presenting the register bars in succession to the action of said numeral keys whenthe case-shift key 7 is in normal position, said connecting means being actuated bynsaidiselector, and means for holding one of said registerbars in the position in which it is-subject to the keys, after the denominational order selector has been removed from its operative selecting position by the operation of said case-shift key. I

15. The combination with a. typewriter having a case-shift key, of'adenominational order selector under control of said shift key, a series of numeral keys, register bars, means connecting said register bars and denominational order selector for presenting the register bars in succession to the action of said numeral keys whenthe case-shift key is in normal position, and a spring-actuated latch which snaps in under the rear end of one of said register bars and holds it in the position in which it is subject to the keys,

after the denominational order selector has.

been removed from its operative selecting position, by the operation ofsaid case-shift key. Z

16. The combination with a denominational order selector, of a series of keys, register bars, unit pins carried thereby, means for presenting said register bars to the 'action of said keys by the said selector, means for holdmg one of said bars 1n a position in g which it is subject to the key action after the selector has been removedfrom its operative -V selecting position, a key for correction of'errors, and means controlled by said key for releasing said register bar from the position in which it'is subject to the action of said numeral keys, whereby any erroneously set unit pinin said bar may be restored to normal position by the action of said error key.

17 In a combined typewriting and computing machine, the combination with a typewriting mechanism having a case-shift; of a register, a series of register bars con trolling said register, "a series of numeral keys for determining amounts ofmovem'ent of sald register bars, said register bars'being normally in position out of range of control by said numeral keys, a denominational-order-selector for presenting the register bars in succession to the keys, and means operable to render saiddenominational selector ineffective on all but one of said register bars when the case is shifted.

18.- The combination with a register wheel forregistering farthings or fractional pence, ofthree numeral keys denoting values of l/t, 1/2 and 3/ 1, respectively, a register bar operative on said wheel, a series of three unit pins in said bar representing said fractional values, and other numeral keys denoting other values than l/l, 1/2 and 3/4, which have no controlling influence over said register bar in its 'operative connection with said register wheel.

" 19. In a combined typewriting and computing machine, the combination with a 

